Unit+2+Using+Language+Grammar+课件【知识精讲精研】高中英语外研版（2019）必修第二册

基于大观念的单元整体教学设计Unit2Let’scelebrate了解多元节日文化理解节日深刻内涵培养节日文化自信Lesson1:

Starting

out

&

Vocabulary了解世界各地庆祝季节变换的节日了解节日相关词汇、节日庆祝原因Lesson2:

Understandingideas理解英国作家Tolkien通过圣诞节信表达对孩子深沉的父爱Lesson3:

Usinglanguage学会情态动词表推测的用法掌握如何对节日进行描述Lesson4:

Listening&Speaking学习如何发出和接受节日邀请Lesson5:

Developingideas了解人们对春节团圆饭习俗的不同观点思考传统习俗是否应该改变Lesson6:

Writing写信给编辑（对春节走向世界的看法）Lesson7:

Presentingideas&Reflection创造节日：陈述创造原因单元大观念了解各国特色节日及庆祝原因的多样性，学会理解并描述不同节日，提升多元文化视野；增强对中外不同节日文化的了解，增强国家认同感，有意识地主动弘扬和传播中华优秀文化；理解和辨析不同节日的意义和内涵，通过创造新节日，联系自身实际，实现知识与思维能力的迁移。Unit2Let’scelebrate!UsingLanguage蔡文Modals(2)ReviewInUnit1,we’velearnedthefollowingmodals:beabletodarehadbetterneedhavetoGrammar:Modals(2)1.ThatiswhyLettersfromFatherChristmascouldbe/mustbe/mightbetheperfectbook...那就是为什么《圣诞老人的来信》可能/一定/或许是一本完美之书……couldbe:indicatepossibilitymustbe:indicatesurenessmightbe:indicatelesspossibility情态动词+动词原形，表示对现在的推测Grammar:Modals(2)2.Thechildrenmusthavebeen/couldhavebeen/mighthavebeenveryexcitedastheyopenedit.孩子们打开它的时候一定/可能/或许很兴奋。musthavebeen:quitesureaboutthestatementcouldhavebeen:notverysureaboutthestatementmighthavebeen:notsureaboutthestatement情态动词+完成式，表示对已发生情况的推测Grammar:Modals(2)3....theymight/could/mustnotreceivetheirpresentsiftheywerenotgood.如果他们表现不好，他们可能收不到/就收不到/绝不能收到礼物。mightnot:indicatepossibilitycouldnot:indicateimpossibilitymustnot:theyarenotallowedtoreceivethepresentsGrammar:Modals(2)情态动词(modals)没有人称、数的变化必须和其他动词一起构成谓语用来表示态度、愿望、推测情态动词对现在和未来的推测对过去的推测使用句型mustmust+动词原形musthavedone肯定句may/mightmay/might+动词原形may/mighthavedone肯定句，否定句can/couldcan/could+动词原形can/couldhavedone否定句，疑问句（could可用于肯定句）should用来表示一种估计的情况“按理会+估计会”should+do/beshouldhavedone肯定句，否定句，疑问句表推测时，英语中只使用must,may,might,maynot和can't这五个表达的语气依次递减：must：一定（语气肯定）may：也许（不很肯定）might：或许（比may语气更弱）maynot：也许不（表否定）can't：一定不（must的反义）Conclusion

musthavedoneItmusthaverainedlastnight,forthegroundiswet.“She

musthave

leftthehousebynow;it’snearly11o'clock.”Ididn’thearthephone.Imusthavebeenasleep.“I’velostoneofmygloves.”“Youmusthavedroppeditsomewhere.”Tomakeguessesordeductionsaboutanactioninthepastthatwebelievehasdefinitelyhappenedorpossiblyhappened.can+havedone(mainlyusedinnegativesandquestions)Youcan’thaveforgottenher.Wherecanshehaveputit?could+havedone(mainlyusedinnegativesandquestions)Hecouldnothavebeenmorethan16atthattime.Couldshehaveforgottenmyaddress?might+havedoneHemay/mighthavecomebytrain.should+havedoneThey

shouldhavearrivedinBeijingbythistime.Let’spractice!Rewritetheunderlinedsentencesintheconversationusingcan/could,may/mightandmustYoumustbefeelingtirednow.Itmay/might/couldbehim.ThatmustbeLucy!Thatcan’tbeLucy.Theymay/might/couldbefromourschool.Culturenote:BlackFriday

Lookatthepictureandmakeasmanysentencesaspossibleusing

can/could,may/might

andmust.(P22)Grammar:Modals(2)Themanwithawalletinhishandmightbeabitunwillingtopay.Grammar:Modals(2)Thewomaninredmustbeveryexcitedtobuysomanythings.Grammar:Modals(2)Thewomanwithglassesmaybeverytiredtogetupsoearlyandcarrysomanybags.Grammar:Modals(2)Thecashiermightbefeeling

uncomfortableasheissweatingalot.1.---I

wonderwhySaralooksworriedtoday.---I’mnotsure,butshe_____asmallaccidentdrivinghere.A.couldhave B.mighthave C.mighthavehad D.musthavehad2.Helen____goonthetripwithus,butsheisn’tquitesureyet.A.shall B.must C.may D.can3.Itwasaredlight,William.You____thecar.---Sorry,Ididn’tseeit.A.muststop B.shouldstop C.musthavestopped D.shouldhavestopped4.Mark_____havehurried.Afterdrivingattopspeed,hearrivedhalfanhourearly.A.needn’t B.wouldn’t C.mustn’t D.couldn’t5.MayItakethisbookoutofthereadingroom?---No,you____.Youreaditinhere.A.mightn’t B.won’t C.needn’t D.mustn’t6.Thetrafficisheavythesedays;I____arriveabitlate